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annotate mercurial/thirdparty/zope/interface/common/sequence.py @ 46357:72f5280e33b6

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commit: look-up new revision once Look-up by node is slightly more expensive, so since it is necessary more than once, do it explicitly. Differential Revision: https://phab.mercurial-scm.org/D9830
author Joerg Sonnenberger <joerg@bec.de>
date Tue, 19 Jan 2021 00:18:39 +0100
parents 68ee61822182
children
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1 ##############################################################################
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2 #
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3 # Copyright (c) 2001, 2002 Zope Foundation and Contributors.
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4 # All Rights Reserved.
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5 #
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6 # This software is subject to the provisions of the Zope Public License,
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7 # Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
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8 # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
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9 # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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10 # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
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11 # FOR A PARTICULAR PURPOSE.
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12 #
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13 ##############################################################################
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14 """Sequence Interfaces
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15 """
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16
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17 from __future__ import absolute_import
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18
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19 __docformat__ = 'restructuredtext'
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20 from .. import Interface
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21
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22 class IMinimalSequence(Interface):
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23 """Most basic sequence interface.
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24
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25 All sequences are iterable. This requires at least one of the
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26 following:
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27
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28 - a `__getitem__()` method that takes a single argument; interger
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29 values starting at 0 must be supported, and `IndexError` should
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30 be raised for the first index for which there is no value, or
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31
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32 - an `__iter__()` method that returns an iterator as defined in
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33 the Python documentation (http://docs.python.org/lib/typeiter.html).
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34
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35 """
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36
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37 def __getitem__(index):
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38 """`x.__getitem__(index)` <==> `x[index]`
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39
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40 Declaring this interface does not specify whether `__getitem__`
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41 supports slice objects."""
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42
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43 class IFiniteSequence(IMinimalSequence):
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44
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45 def __len__():
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46 """`x.__len__()` <==> `len(x)`"""
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47
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48 class IReadSequence(IFiniteSequence):
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49 """read interface shared by tuple and list"""
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50
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51 def __contains__(item):
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52 """`x.__contains__(item)` <==> `item in x`"""
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53
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54 def __lt__(other):
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55 """`x.__lt__(other)` <==> `x < other`"""
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56
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57 def __le__(other):
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58 """`x.__le__(other)` <==> `x <= other`"""
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59
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60 def __eq__(other):
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61 """`x.__eq__(other)` <==> `x == other`"""
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62
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63 def __ne__(other):
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64 """`x.__ne__(other)` <==> `x != other`"""
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65
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66 def __gt__(other):
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67 """`x.__gt__(other)` <==> `x > other`"""
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68
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69 def __ge__(other):
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70 """`x.__ge__(other)` <==> `x >= other`"""
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71
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72 def __add__(other):
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73 """`x.__add__(other)` <==> `x + other`"""
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74
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75 def __mul__(n):
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76 """`x.__mul__(n)` <==> `x * n`"""
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77
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78 def __rmul__(n):
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79 """`x.__rmul__(n)` <==> `n * x`"""
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80
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81 def __getslice__(i, j):
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82 """`x.__getslice__(i, j)` <==> `x[i:j]`
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83
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84 Use of negative indices is not supported.
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85
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86 Deprecated since Python 2.0 but still a part of `UserList`.
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87 """
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88
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89 class IExtendedReadSequence(IReadSequence):
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90 """Full read interface for lists"""
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91
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92 def count(item):
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93 """Return number of occurrences of value"""
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94
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95 def index(item, *args):
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96 """Return first index of value
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97
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98 `L.index(value, [start, [stop]])` -> integer"""
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99
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100 class IUniqueMemberWriteSequence(Interface):
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101 """The write contract for a sequence that may enforce unique members"""
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102
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103 def __setitem__(index, item):
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104 """`x.__setitem__(index, item)` <==> `x[index] = item`
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105
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106 Declaring this interface does not specify whether `__setitem__`
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107 supports slice objects.
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108 """
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109
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110 def __delitem__(index):
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111 """`x.__delitem__(index)` <==> `del x[index]`
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112
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113 Declaring this interface does not specify whether `__delitem__`
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114 supports slice objects.
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115 """
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116
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117 def __setslice__(i, j, other):
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118 """`x.__setslice__(i, j, other)` <==> `x[i:j]=other`
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119
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120 Use of negative indices is not supported.
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121
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122 Deprecated since Python 2.0 but still a part of `UserList`.
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123 """
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124
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125 def __delslice__(i, j):
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126 """`x.__delslice__(i, j)` <==> `del x[i:j]`
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127
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128 Use of negative indices is not supported.
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129
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130 Deprecated since Python 2.0 but still a part of `UserList`.
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131 """
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132 def __iadd__(y):
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133 """`x.__iadd__(y)` <==> `x += y`"""
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134
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135 def append(item):
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136 """Append item to end"""
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137
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138 def insert(index, item):
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139 """Insert item before index"""
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140
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141 def pop(index=-1):
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142 """Remove and return item at index (default last)"""
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143
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144 def remove(item):
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145 """Remove first occurrence of value"""
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146
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147 def reverse():
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148 """Reverse *IN PLACE*"""
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149
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150 def sort(cmpfunc=None):
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151 """Stable sort *IN PLACE*; `cmpfunc(x, y)` -> -1, 0, 1"""
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152
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153 def extend(iterable):
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154 """Extend list by appending elements from the iterable"""
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155
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156 class IWriteSequence(IUniqueMemberWriteSequence):
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157 """Full write contract for sequences"""
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158
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159 def __imul__(n):
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160 """`x.__imul__(n)` <==> `x *= n`"""
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161
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162 class ISequence(IReadSequence, IWriteSequence):
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163 """Full sequence contract"""